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KLE[ NJFELDER <br /> I <br /> 2 The leachate elevation is then measured from a set location using a conductivity-based <br /> water-level meter The level is generally measured from a surveyed mark on the north <br /> ' nm of the casing <br /> 3 A leachate sample is then collected using a clean, disposable baler <br /> 4 The sample is labeled and immediately stored in an iced cooler pending transport to the <br />' analytical laboratory The sample is logged on a chain-of-custody <br /> A-7 SURFACE WATER MONITORING <br /> 1 Prior to collecting surface water samples, the depth of water is estimated at a designated <br /> location in the surface water body <br />' 2 Surface water samples are collected directly from the stream or surface water using a <br /> clean unpreserved plastic bottle, disposable bailer, bailer, cohwasa, DipstikTM, dipper, <br /> penstaltic pump, etc , or by directly filling the sample containers Sampling equipment <br /> will either be disposable, dedicated or decontaminated in accordance with the above- <br /> defined decontamination protocols <br /> 3 Care is taken not to disturb the stream bottom and introduce sediment in the sample The <br /> fluid is then poured into appropriate preserved or unpreserved bottles for the requested <br /> Manalysis <br />' 4 The sample is labeled and immediately stored in an iced cooler pending transport to the <br /> analytical laboratory The sample is logged on a chain-of-custody <br />' A-8 TANK REMOVAL SAMPLING <br /> A-8 1 Collection of Soil Samples and Laboratory Analysis <br /> Soil and water samples will be collected during the tank removal operations in accordance with <br /> the current Leaking Underground Fuel Tank Field (LUFT) Manual and the Tri-Regional <br />' Guidelines issued by the California Regional Water Quality Control Board (RWQCB) <br /> A Kleinfelder, environmental geologist will be on site during the tank removal activities to <br /> collect soil samples for qualitative field screening and laboratory analysis Tank excavation soil <br /> samples will be obtained by scraping the sidewalls or excavation bottom at the desired locations <br /> with the backhoe bucket Samples will then be collected from the bucket by packing soil in a <br /> clean brass tube with a clean hand trowel The soil samples may also be collected using a slide <br /> hammer lined with a clean brass tube with appropriate extension to reach the desired sampling <br /> depth The collected brass tubes will then be sealed with Teflon sheets and tight fitting plastic <br /> caps <br /> 28209 T03/ST03R181 1 Page A-7 <br /> Q 2003 Kleinfelder, Inc December 29,2003 <br />